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Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”

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Views from the Choir Loft

How Does One Use The Ordo Cantus Missæ?

Jeff Ostrowski · July 29, 2013

597 Gregorian Missal Gregorian Missal by Solesmes INALLY, HOW DOES ONE USE the pages of the Ordo Cantus Missæ? To repeat what has been said in the documents, the Ordo Cantus Missæ normally simply points to the official 1908 Graduale and says “take the chants from this Sunday.” For instance, in the sample page we’re about to examine, you can see that the “15th Sunday in Ordinary time” says, “Take the chants from the 10th Sunday after Pentecost”:

      * *  Example page from the Ordo Cantus Missae

But what about the “B” circled in pink and the “I” and “II” circled in green? What in the world do those mean? Steven Van Roode explains:

This is explained in the Praenotanda, n. 20 (p. 11) of the Ordo Cantus Missae. In the section ‘Proprium tempore’ the chants for each week are listed. Your scan is from this section. These chants are to be sung on Sunday and all weekdays, except for the days indicted by the indented characters at the end of the week’s list: letters A, B and C indicate that there are other chants for the Sunday of Year A, B or C (which are specified on pp. 62-64), and roman numerals indicate that there are other chants for weekdays in Year I or II, with the Arabic numerals indicating the weekday (2 = feria secunda = Monday, etc.); these are specified on pp. 65-74.

So, for the fifteenth week in Ordinary Time (n. 112) we have the chants of the Tenth Sunday after Pentecost from the 1961 Graduale Romanum:
      IN Dum clamarem
      GR Custodi me
      OF Ad te levavi
      AL Te decet hymnus

. . . except for the Communion:
      CO Passer invenit

. . . and ad libitum options:
      IN Ego autem cum iustitia
      CO Qui mandicat

So far, so good. Now we come to the “B” circled in pink. Apparently, there are other chants for Sunday of Year B (specified on p. 63):
      GR Ostende nobis

And there are other chants for Year I (Monday and Thursday) and Year II (Thursday) (specified on p. 70; note the arrangement of the data: left for Year I, right for Year II and centre for Year I ánd II):
      Year I (Monday): GR Anima nostra
      Year I and II (Thursday): AL Venite ad me

All these different chants match the readings of the Sunday or weekday and are duly given in the 1974 Graduale Romanum. I hope this explanation made clear how the OCM indicates alternative chants for Sundays and weekdays.

OK . . . SO WHAT?  What’s the lesson here?  What is my point, precisely?

My point should be obvious. The Ordo Cantus Missæ is incredibly difficult to use. It almost couldn’t be more confusing than it is. It is totally unhelpful.

The good news is that the hard work has been done for us already with the Solesmes 1974 Graduale, the Solesmes Gregorian Missal (2012), the Lalemant Propers, the Simple English Propers (CMAA), and many other collections. Therefore, you don’t have to fool around with the Ordo Cantus Missæ . . . which is probably why very few people own this book!

This article is part of a series:

Part 1   •   Part 2

Opinions by blog authors do not necessarily represent the views of Corpus Christi Watershed.

Filed Under: Articles Tagged With: Ordo Cantus Missae Last Updated: October 12, 2022

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About Jeff Ostrowski

Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He resides with his wife and children in Michigan. —(Read full biography).

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Corpus Christi Watershed

President’s Corner

    “What Martin Luther Said…”
    My pastor asked me to write little columns for the bulletin each week. The article for 20 July 2025 has been posted, and it’s called: “What Luther Said…” Martin Luther (an ex-priest and apostate) was an infamous heretic whose ignorance of JESUS CHRIST was only exceeded by his filthy and disgusting vulgarity.
    —Jeff Ostrowski
    “Music List” • 15th in Ordinary Time (Year C)
    Some have expressed interest in perusing the ORDER OF MUSIC I prepared for the 15th Sunday in Ordinary Time (13 July 2025). If such a thing interests you, feel free to download it as a PDF file. As always, the Responsorial Psalm, Gospel Acclamation, and propers for this Sunday are also provided at the the feasts website.
    —Jeff Ostrowski
    15th Sunday in Ordinary Time (Year C)
    This coming Sunday—13 July 2025—is the 15th Sunday in Ordinary Time (Year C). All the chants have been conveniently assembled and posted at the feasts website. The OFFERTORY, Ad Te Levávi, is particularly beautiful.
    —Jeff Ostrowski

Quick Thoughts

    Pope Pius XII Hymnal?
    Have you ever heard of the Pope Pius XII Hymnal? It’s a real book, published in the United States in 1959. Here’s a sample page so you can verify with your own eyes it existed.
    —Corpus Christi Watershed
    “Hybrid” Chant Notation?
    Over the years, many have tried to ‘simplify’ plainsong notation. The O’Fallon Propers attempted to simplify the notation—but ended up making matters worse. Dr. Karl Weinmann tried to do the same in the time of Pope Saint Pius X by replacing each porrectus. You can examine a specimen from his edition and see whether you agree he complicated matters. In particular, look at what he did with éxsules fílii Hévae.
    —Corpus Christi Watershed
    Antiphons Don’t Match?
    A reader wants to know why the Entrance and Communion antiphons in certain publications deviate from what’s prescribed by the GRADUALE ROMANUM published after Vatican II. Click here to read our answer. The short answer is: the Adalbert Propers were never intended to be sung. They were intended for private Masses only (or Masses without music). The “Graduale Parvum,” published by the John Henry Newman Institute of Liturgical Music in 2023, mostly uses the Adalbert Propers—but sometimes uses the GRADUALE text: e.g. Solemnity of Saints Peter and Paul (29 June).
    —Corpus Christi Watershed

Random Quote

Impelled by the weightiest of reasons, we are fully determined to restore Latin to its position of honor, and to do all We can to promote its study and use. The employment of Latin has recently been contested in many quarters, and many are asking what the mind of the Apostolic See is in this matter. We have therefore decided to issue the timely directives contained in this document, so as to ensure that the ancient and uninterrupted use of Latin be maintained and, where necessary, restored.”

— Pope John XXIII (22 February 1962)

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